Pengaruh pH dan Penentuan Kapasitas Adsorpsi Logam Berat Pada Biomassa Eceng Gondok (Eichhornia crassipes)
ABSTRACT: Effect of pH and
determination of adsorption capacity of Cu(II), Ni(II) and Pb(II) heavy metal
ions on adsorbent prepared from Eichhornia crassipes (eceng gondok) biomass has
been investigated. The influence of media acidity on the adsorption
characteristics was carried out by determining ions adsorbed at various pH in
the range of 2-10, while an adsorption isotherm model of Langmuir was used to
estimate the capacity of adsorption. Results showed that Cu(II) was optimally
adsorbed at the range pH of 5-6, Ni(II) at 2-4, while Pb(II) reached an optimum
adsorption at pH 2-3. The adsorption data of Cu(II), Ni(II) and Pb(II) for the
adsorbent folowed quite well Langmuir isotherm model, confirmed that such
chemisorptions involved on that process. The ions adsorption capacities (am)
were 27.47, 16.69, and 15.04 mg/g for Pb(II), Cu(II), and Ni(II), respectively.
Penulis: Anis Shofiyani,
Gusrizal
Kode Jurnal: jpkimiadd060055
